12138743 has 2 divisors, whose sum is σ = 12138744. Its totient is φ = 12138742.

The previous prime is 12138727. The next prime is 12138761. The reversal of 12138743 is 34783121.

12138743 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12138743 - 2⁴ = 12138727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12138703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6069371 + 6069372.

It is an arithmetic number, because the mean of its divisors is an integer number (6069372).

Almost surely, 2^12138743 is an apocalyptic number.

12138743 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138743 is an equidigital number, since it uses as much as digits as its factorization.

12138743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 12138743 is about 3484.0698902290. The cubic root of 12138743 is about 229.8218090534.

The spelling of 12138743 in words is "twelve million, one hundred thirty-eight thousand, seven hundred forty-three".